Received: 13 October 2017
Accepted: 24 March 2018
First Online: 16 April 2018
Compliance with Ethical Standards
: The authors have no conflicts of interest including relevant financial interests, activities, relationships, and affiliations.
: The preliminary results of the study were presented as poster at the American Society of Colon and Rectal Surgery Annual Scientific Meeting, June 10–14, 2017, Seattle, WA.